jquery focus blur pass parameter

I can't seem to access the variable defaultValue down in my .blur() function. I've tried various stuff but with no luck. So far I only get an empty object. What's wrong?

jQuery(document).ready(function(){

    jQuery('#nameInput, #emailInput, #webInput').focus(function(){      
        var defaultValue = jQuery(this).val();
        jQuery(this).val("");
    })
    .blur(function(defaultValue){   
         if(jQuery(this).val() == ""){
             jQuery(this).val(defaultValue);
         }
    }); 

});